Clematis crispa |
Clematis occidentalis |
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blue-jasmine, curly clematis, curly virginsbower, marsh clematis, swamp leather flower |
blue clematis, clématite occidentale, Columbia bower, Columbia clematis, Columbia virgin's bower, purple clematis, purple virgin's-bower, rock clematis, western blue clematis, western blue virginsbower, western clematis |
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Stems | viny, to 3 m, glabrous or sparsely to moderately pilose-pubescent, denser at nodes. |
viny, climbing or trailing (plants scarcely viny perennials in var. dissecta). |
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Leaf | blade 1-2-pinnate or rarely a few simple or 3-foliolate; leaflets 4-10 plus additional ± tendril-like terminal leaflet, usually lanceolate to ovate, occasionally linear, unlobed or proximally 3-5-lobed, (1.5-)3-10 × (0.1-)0.4-4(-5) cm, thin, not conspicuously reticulate; surfaces glabrous, not glaucous. |
blade 1-ternate (or terminal leaflet sometimes ternate in var. dissecta), ± firm but not succulent; leaflets lance-ovate to triangular or suborbiculate, lobed or unlobed, margins entire or toothed. |
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Inflorescences | terminal, 1-flowered; bracts absent. |
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Flowers | bell-shaped; sepals distally strongly spreading to recurved, violet-blue, lanceolate, 2.5-5 cm, margins proximally thick and tomentose, distally broadly expanded, 2-6 mm wide, thin, crispate, less conspicuously tomentose than proximal portion, or glabrate, tips acuminate, abaxially glabrous. |
sepals violet-blue, reddish violet, or white, lanceolate to ovate or elliptic-oblong. |
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Achenes | bodies appressed-puberulent; beak 2-3.5 cm, appressed-puberulent. |
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2n | = 16. |
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Clematis crispa |
Clematis occidentalis |
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Phenology | Flowering spring–summer. | |||||||||
Habitat | Low woods, bottomlands, swamps | |||||||||
Elevation | 0-200 m (0-700 ft) | |||||||||
Distribution |
AL; AR; FL; GA; IL; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA
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CO; CT; DE; IA; ID; IL; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OR; PA; RI; UT; VA; VT; WA; WI; WV; WY; AB; BC; NB; ON; QC; SK; YT
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Discussion | Clematis crispa is highly variable in leaflet width, and conspicuous variation may occur on a single plant (R.O. Erickson 1943); no discontinuity or geographic correlation exists that would permit the recognition of varieties. The dilated, petaloid sepal tips and thin, crispate, broadly expanded sepal margins are diagnostic for this species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||
Parent taxa | Ranunculaceae > Clematis > subg. Viorna | Ranunculaceae > Clematis > subg. Atragene | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Viorna crispa, Viorna obliqua | Atragene occidentalis | ||||||||
Name authority | Linnaeus: Sp. Pl. 1: 543. (1753) | (Hornemann) de Candolle: Prodr. 1: 10. (1824) | ||||||||
Web links |
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